Convertible case horizontal refrigeration coil

ABSTRACT

An evaporator coil and drain pan assembly that can be converted between horizontal-left and horizontal-right orientations by 180 degree rotation of the assembly, which includes two drain pans located opposite one another, a dedicated horizontal refrigeration coil, and a refrigerant line, and wherein the fins of the coil run vertically from one drain pan to the opposite drain pan.

FIELD

Embodiments disclosed herein relate generally to a heat exchange system.Specifically, the embodiments disclosed herein relate to an evaporatorand a case for the evaporator wherein a horizontal V-coil with verticalfins has drain pans allowing for multiple configurations of the coil.

BACKGROUND

HVACR systems, such as home furnaces with air conditioning units, areused to cool airflow distributed within a structure. Some HVACR systems,for example those for smaller buildings such as residences, cool theairflow using a refrigeration coil such as an evaporator coil.

Current evaporator coil designs are installed in HVACR systems in aparticular orientation, such as “horizontal left,” “horizontal right,”or vertical orientations, with the direction of airflow with respect toa front side having the refrigerant line connecting the coil to the restof a compressor system. The shape of the coil may be a V-shape, whichmay be referred to as a V-coil or an A-coil depending on the orientationof the coil.

When the airflow being cooled is humid, water may condense on theevaporator coil. The condensate may drip or pool, and contact thesupport structures or the duct system, possibly damaging the structureor components of the structure. To capture and direct the condensate, adrain pan may be included, positioned below the evaporator coil when thecoil is installed.

Coil designs may be optimized for particular orientations and directionsof airflow, or designed to offer consistent though less efficientperformance in a variety of orientations. Where a coil is optimized fora particular type of airflow, installers may be limited in the placementand orientation of a furnace in order to install the coil in its optimalconfiguration while connecting to the refrigeration line. In addition toreduced efficiency compared to airflow-specific dedicated coil designs,multi-position coil designs may require additional swapping ofcomponents or parts or use of different installation kits for eachorientation, making their use more complex and costly for installers.

SUMMARY

Convertible-cased refrigeration coil and drain pan assemblies mayinclude refrigeration coils for dedicated airflow directions, and drainpans which allow the assembly to be installed in multiple positionswhile collecting condensate. The refrigeration coil and drain panassembly is such that the assembly may be switched between ahorizontal-left dedicated coil or a horizontal-right dedicated coil byrotating the assembly about an axis parallel to the direction of airflowthrough the installed assembly. This enables the use of efficientdesigns for the refrigeration coil while allowing embodiments to beinstalled in a variety of configurations.

An HVACR refrigeration coil and drain pan assembly, including two drainpans, opposite one another, each having at least one drain connection,and a coil comprising a plurality of fins, the fins running in adirection from a first drain pan towards a second drain pan.

In an embodiment, a refrigerant line is connected to the refrigerationcoil. The refrigerant line may exit the drain pan assembly on a side ofthe drain pan assembly between the two drain pans. The refrigerant linemay be vertically biased towards one of the drain pans. In anembodiment, the refrigerant line exits the refrigeration coil and drainpan assembly on a side of the assembly and at a point equidistant fromthe two drain pans. In an embodiment, there is a removable access dooron the side of the refrigeration coil and drain pan assembly that therefrigerant line exits the assembly.

In an embodiment, the fins run perpendicular to the plane of the drainpans.

In an embodiment, one or more of the drain pans comprises multiplelevels.

In an embodiment, the refrigeration coil is a dedicated horizontalrefrigeration coil.

An HVACR unit includes a blower providing an airflow and a refrigerationcoil and drain pan assembly downstream from the blower with respect tothe airflow, and the refrigeration coil and drain pan assembly includesfirst and second drain pans, located opposite one another and eachhaving one or more drain connections, a refrigeration coil having finsrunning in a direction from one drain pan to the other, and arefrigerant line exiting the heat exchanger and drain pan assembly on aside.

In an embodiment, the refrigeration coil and drain pan assembly isinstalled in the HVACR unit such that a drain pan is at the bottom ofthe assembly.

In an embodiment, the airflow enters the refrigeration coil and drainpan assembly at an open end of the refrigeration coil side and travelstowards a converged end of the refrigeration coil.

In an embodiment, the refrigeration coil and drain pan assembly may beinstalled in a horizontal-left position or a horizontal-right positionwith respect to the direction of the airflow from the perspective of therefrigerant line side of the assembly.

In an embodiment, there is a removable access door on the side of therefrigeration coil and drain pan assembly that the refrigerant lineexits the assembly.

In an embodiment, the fins run perpendicular to the plane of the drainpans.

In an embodiment, one or more of the drain pans comprises multiplelevels.

These refrigeration coil and drain pan assemblies and HVACR systemsincluding these assemblies may allow installers more freedom inorienting and placing the HVACR systems within buildings, particularlywhere the systems must be in tight spaces such as closets or crawlspaces, while still enabling the use of refrigeration coils which aredesigned for superior performance in a particular orientation.

DRAWINGS

FIG. 1 shows a schematic of a refrigerant circuit.

FIG. 2 shows a view of a refrigeration coil installed in an HVACR unit.

FIG. 3 shows an example of a drain pan

FIG. 4A shows a top-down view of an example embodiment of an evaporatorcoil and drain pan assembly.

FIG. 4B shows a top-down view of the example embodiment of an evaporatorcoil and drain pan assembly shown in FIG. 4A when rotated around an axisparallel to the direction of entering airflow.

DETAILED DESCRIPTION

Refrigeration coils in HVACR units require a refrigerant line to beconnected to a refrigerant circuit, for example by brazing. The positionof the refrigerant line, in conjunction with the design of therefrigeration coil and the airflow direction required by therefrigeration coil design can constrain the options of HVACR systeminstallers by requiring particular positions for the furnace and otherHVACR system components to connect a refrigerant line to a refrigerantcircuit and to have the proper airflow through the refrigeration coil.The furnace position required by the refrigeration coil may conflictwith the limitations of small spaces such as, for example, basements orcrawlspaces. A dedicated horizontal refrigeration coil assembly thatprovides adjustability and reversibility of the refrigerant lineconnection allows installers more options without having to compromiseefficiency with a multi-position refrigeration coil design. The assemblymay include two drain pans located opposite one another, allowingcondensate to drain regardless of a 180 degree rotation of the assemblyto present the refrigerant line on a particular side of therefrigeration coil assembly.

Refrigeration coils may be arranged in various configurations. Theseconfigurations include, for example, V-shaped coil assemblies (V-coils),A-shaped coil assemblies (A-coils) and horizontal coils which may betilted V- or A-shapes. The evaporator coil configuration may be selectedbased on a direction of airflow to be directed through it, for exampleto optimize heat transfer to an airflow traveling through the coil in aparticular direction. For example, the evaporator coil may be in adedicated horizontal configuration which is similar to a V-shape laiddown onto its back. V-shaped coil assemblies may have a converged endcorresponding to the vertex of the V, and may have an open endcorresponding to the open top of a V.

Refrigeration coil and drain pan assemblies which present a refrigerantline on a side of the refrigeration coil and drain pan assembly may bedesigned to have vertical or horizontal orientations, defined by thedirection of the airflow through the refrigeration coil. The horizontalorientations may further have a direction, such as horizontal-left orhorizontal-right, based on the direction of airflow from the perspectivefacing the refrigerant line.

FIG. 1 shows a refrigerant circuit which may include a refrigerationcoil. FIG. 1 is a schematic diagram of a refrigerant circuit 2,according to an embodiment. The refrigerant circuit 2 generally includesa compressor 10, a condenser 4, an expansion device 6, and an evaporator8. The compressor 10 can be, for example, a scroll compressor, a screwcompressor, or a rotary vane compressor. The refrigerant circuit 2 is anexample and can be modified to include additional components. Forexample, in an embodiment, the refrigerant circuit 2 can include othercomponents such as, but not limited to, an economizer refrigerationcoil, one or more flow control devices, a receiver tank, a dryer, asuction-liquid refrigeration coil, or the like.

The refrigerant circuit 2 can generally be applied in a variety ofsystems used to control an environmental condition (e.g., temperature,humidity, air quality, or the like) in a space (generally referred to asa conditioned space). Examples of such systems include, but are notlimited to, HVACR systems.

The compressor 10, condenser 4, expansion device 6, and evaporator 8 arefluidly connected. The refrigerant circuit 2 can operate according togenerally known principles. The refrigerant circuit 2 can be configuredto heat or cool a process fluid such as air, such as in an airconditioner or heat pump.

In operation, the compressor 10 compresses a working fluid (e.g., a heattransfer fluid such as a refrigerant or the like) from a relativelylower pressure gas to a relatively higher-pressure gas. The relativelyhigher-pressure gas is also at a relatively higher temperature, which isdischarged from the compressor 10 and flows through the condenser 4. Theworking fluid flows through the condenser 4 and rejects heat to aprocess fluid (e.g., air or the like), thereby cooling the workingfluid. The cooled working fluid, which is now in a liquid form, flows tothe expansion device 6. The expansion device 6 reduces the pressure ofthe working fluid. As a result, a portion of the working fluid isconverted to a gaseous form. The working fluid, which is now in a mixedliquid and gaseous form flows to the evaporator 8. The working fluidflows through the evaporator 8 and absorbs heat from a process fluidsuch as air, heating the working fluid, and converting it to a gaseousform. The gaseous working fluid then returns to the compressor 10. Theabove-described process continues while the refrigerant circuit isoperating, for example, in a cooling mode (e.g., while the compressor 10is enabled).

Evaporator 8 may be a refrigeration coil located in the path of anairflow, for example located within an HVACR system such as aresidential furnace assembly. In an embodiment, the airflow is a processfluid, and heat is transferred from the process fluid to a working fluidwithin the refrigeration coil such as a refrigerant, cooling theairflow. The airflow may then be distributed within a structure such asa home, providing air conditioning to the structure.

FIG. 2 shows a view of an HVACR unit. The HVACR unit may be aresidential HVACR system. The HVACR unit includes furnace 20, whichincludes a blower (not shown). The blower directs airflow 32 through therefrigeration coil and drain pan assembly 22. The refrigeration coil anddrain pan assembly 22 includes drain pans 24 and refrigeration coil 34.Refrigeration coil 34 may be, for example, a heat exchanger such as atube-and-fin heat exchanger which includes tubes providing fluidcommunication between refrigerant line 30 and fins 28.

Refrigeration coil 34 may be a dedicated horizontal V-coil, arrangedsuch that it appears as a V lying on a flat plane. The refrigerationcoil 34 includes fins 28. The fins 28 may run in a direction from onedrain pan to another. Where the drain pans are parallel to one another,the fins 28 may run in a direction perpendicular to the plane of eachdrain pan 24. For example, the fins 28 may run vertically when therefrigeration coil and drain pan assembly 22 is installed with the HVACRunit. This orientation allows condensate to run down the fins 28 intothe drain pans 24, and the condensate may leave the drain pans via drainconnections 26.

Refrigerant line 30 carries cooled working fluid, such as a refrigerant,into the refrigeration coil 34, where it transfers heat to an airflow 32flowing through the refrigeration coil 34. A refrigerant return line 36may return working fluid heated in the refrigeration coil 34 to continueflowing through the refrigerant circuit. The refrigerant line 30 mayinclude an opening located near where the refrigerant line leaves therefrigeration coil assembly. The opening may be brazed to a line from acompressor system to put the refrigerant line 30 in fluid communicationto receive a working fluid of the compressor system. In an embodiment,the refrigerant line 30 may be positioned proximate to an end of therefrigeration coil 34 and drain pan assembly 22 along an axis 46 in thedirection of the airflow (e.g. arrow 32 shown in FIG. 2). This end ofthe refrigeration coil and drain pan assembly 22 may correspond to theend of a coil slab of refrigeration coil 34, and can be on either theincoming airflow side of the coil 34 or on the outgoing airflow side ofthe coil 34. In an embodiment, opening of the refrigerant line 30 islocated equidistant from each of the drain pans 24, with a distance 40between the opening of refrigerant line 30 and each of the drain pans24.

The orientation of the refrigeration coil and drain pan assembly 22 maybe defined based on the perspective of the side that the refrigerantline 30 leaves the assembly 22 and the direction of airflow 32 when therefrigeration coil and drain pan assembly 22 is viewed from that side.In the embodiment shown in FIG. 2, the refrigeration coil and drain panassembly 22 is in the horizontal-right configuration, based on thedirection of travel of airflow 32 from furnace 20 through and out of therefrigeration coil and drain pan assembly 22.

In the embodiment shown in FIG. 2, two drain pans 24 are located on atop and bottom side, respectively, of the refrigeration coil and drainpan assembly 22. Drain pans 24 each include one or more drain outlets26. The one or more drain outlets 26 may be holes in the drain pans 24.The one or more drain outlets 26 may include an attachment point for ahose or other structure for carrying condensate away from the drain pan.

An access door 38 may be located on the side of the refrigeration coiland drain pan assembly 22 where the refrigerant line 30 exits therefrigeration coil and drain pan assembly 22. The access door 38 may bemoved or removed from the refrigeration coil and drain pan assembly 22to provide access to the interior of the assembly, including access tothe refrigeration coil 34 for maintenance and the refrigerant line 30for installation. In the embodiment shown in FIG. 2, the access door 38is a removable panel. In an embodiment, the access door 38 is a hingeddoor which may be moved to provide access to the inside of therefrigeration coil and drain pan assembly. In an embodiment, the drainpans 24 may each have an access door 38. For example, the access door 38on the drain pan 24 that is facing upwards as the refrigeration coil anddrain pan assembly 22 is installed may be opened. Access doors 38 indrain pans 24 may be instead of or in addition to the access door 38 onthe side of the unit having refrigerant line 30 as shown in FIG. 2. Sucha configuration can allow access to the inside of the refrigeration coiland drain pan assembly 22 for installation, cleaning and maintenance.

The refrigeration coil and drain pan assembly 22 may be placed followingfurnace 20 with respect to the direction of airflow 32 through the HVACRunit. The airflow 32 may be driven by a blower 42, such as a fan,included in furnace 20. In the embodiment and position shown in FIG. 2,the refrigeration coil and drain pan assembly 22 is located in thehorizontal-right position, with the airflow 32 moving left-to-right whenviewed from a perspective facing the side of the refrigeration coilassembly where the refrigerant line 30 exits the assembly. When rotated180 degrees in rotation direction 44 about an axis 46 that is parallelto the direction of the airflow 32, the refrigeration coil and drain panassembly 22 may be in a horizontal-left position, with the airflow 32traveling towards the left of the refrigeration coil and drain panassembly 22 when viewed from the side having the refrigerant lineconnection 30. In both of these positions, one of the drain pans 24 isat the bottom of the refrigeration coil and drain pan assembly 22, ableto receive condensation. Also, in both positions, the fins 28 of therefrigeration coil 34 are running between the drain pans 24. The fins 28may run in a direction perpendicular to the planes of each drain pan 24,for example vertically between the drain pans 24 when the refrigerationcoil and drain pan assembly 22 is installed alongside a furnace 20. Inthe embodiment shown in FIG. 2, the refrigeration coil 34 is in adedicated horizontal arrangement.

FIG. 3 shows a drain pan. The drain pan 50 has one or more drainconnections 52. The drain pan may include first level 54, second level58, and third level 62. The drain pan also has side wall 68. Side wall68 retains condensate which forms or drips into the drain pan, forexample condensate in the first level 54 of the drain pan. Each of firstlevel 54, second level 58, and/or third level 62 may be curved orsloped, for example level 54 may be sloped such that condensate isdirected towards the drain connections 52. In an embodiment, a level isflat, for example level 58 forming a flat surface in the shape of afootprint of a refrigeration coil, such that the refrigeration coil mayrest on that level. Other features may be disposed on a particularlevel, for example mounting features 64 a may be located on third level62 and a mounting feature 64 b may be located on second level 58. In theembodiment shown in FIG. 3, mounting features 64 a are channels where afeature of a refrigeration coil may be snapped in to connect therefrigeration coil to the drain pan 50. In an embodiment, mountingfeature 64 b is a pair of tabs to be received by slots on therefrigeration coil. First level 54 may be joined to second level 58 by asurface 56. Mounting features may be, for example, flanges or otherprojections which may interface with features on the refrigeration coil,screw-holes or other features receiving a fastener, and/or othermechanical interfaces through which the drain pan 50 may be connected tothe refrigeration coil. Second level 58 may be joined to third level 62by a surface 60. In an embodiment, the relative height of levels 58 and62 may be such that level 62 is flush with the refrigeration coil whenthe refrigeration coil and drain pan are installed together, to directairflow through the refrigeration coil. Surfaces 56 and/or 60 may bevertical or may be sloped. The drain pan may include other features suchas ridges 66. Drain pan features which may be included in embodimentsare also described in U.S. Patent Application No. 62/440,095, which isherein incorporated by reference in its entirety.

FIG. 4A shows a top-down view of a refrigeration coil and drain panassembly. In the embodiment shown in FIG. 4, airflow 102 enters theassembly and blows through refrigeration coil 104. Refrigeration coil104 is in a dedicated-horizontal orientation. Condensate fromrefrigeration coil 104 collects in drain pan 108 beneath the coil, andis removed from drain pan 108 via drain connections 106. Refrigerantline 100 allows the transfer of a working fluid to the refrigerationcoil. In the embodiment shown in FIG. 4A, the refrigerant line 100 isdisposed such that when installed, the embodiment shown in FIG. 4A willbe in the horizontal-right orientation.

FIG. 4B shows a top-down view of the refrigeration coil and drain panassembly according to FIG. 4A when the assembly has been rotated 180degrees in a rotation direction 112 about an axis 110 parallel to thedirection of airflow 102 when it enters the refrigeration coil and drainpan assembly. Following this rotation, the refrigeration coil 104remains in the same dedicated-horizontal orientation, with the airflow102 entering at the open end of the V-shape and traveling towards therestricted end of the V-shape of the refrigeration coil 104. Drainconnections 106 are present in drain pan 108 which is beneath therefrigeration coil 104 and receives condensate from the refrigerationcoil 104. The rotation of the assembly results in refrigerant line 100exiting the assembly on the opposite side from the side it exits in theorientation shown in FIG. 4A. In FIG. 4B, the refrigerant line 100 ispositioned such that the assembly is in the horizontal-left orientation,whereas the assembly is positioned such that it is in thehorizontal-right orientation in FIG. 4A.

Aspects:

It is to be appreciated that any of aspects 1-10 may be combined withany of aspects 11-19.

Aspect 1: A refrigeration coil and drain pan assembly, comprising:

-   -   a first drain pan having one or more drain connections,    -   a second drain pan having one or more drain connections, and    -   a refrigeration coil comprising a plurality of fins;    -   wherein the first drain pan and second drain pan are opposite        one another with respect to the refrigeration coil, and the fins        of the refrigeration coil are oriented in a direction between        the first drain pan and the second drain pan.

Aspect 2: The refrigeration coil and drain pan assembly according toaspect 1, further comprising a refrigerant line connected to therefrigeration coil.

Aspect 3: The refrigeration coil and drain pan assembly according toaspect 2, wherein the refrigerant line exits the refrigeration coil anddrain pan assembly at a point equidistant from the first drain pan andthe second drain pan.

Aspect 4: The refrigeration coil and drain pan assembly according to anyof aspects 2-3, further comprising a removable access door disposed on aside of the refrigeration coil and drain pan assembly where therefrigerant line exits the refrigeration coil and drain pan assembly.

Aspect 5: The refrigeration coil and drain pan assembly according to anyof aspects 1-4, wherein the first drain pan and the second drain pan areparallel to one another.

Aspect 6: The refrigeration coil and drain pan assembly according toaspect 5, wherein the fins run in a direction perpendicular to theplanes of both the first drain pan and the second drain pan.

Aspect 7: The refrigeration coil and drain pan assembly according to anyof aspects 1-6, wherein at least one of the first drain pan and thesecond drain pan comprises at least two levels.

Aspect 8: The refrigeration coil and drain pan assembly according to anyof aspects 1-7, wherein the refrigeration coil is a dedicated horizontalrefrigeration coil.

Aspect 9: The refrigeration coil and drain pan assembly according to anyof aspects 1-8, wherein the refrigeration coil is configured for anairflow to enter the refrigeration coil from a specific direction.

Aspect 10: The refrigeration coil and drain pan assembly according toany of aspects 1-9, wherein the refrigeration coil has an open end and aconverged end and an airflow enters the refrigeration coil at the openend and travels in a direction towards the converged end.

Aspect 11: An HVACR unit, comprising:

-   -   a blower driving an airflow, and    -   a refrigeration coil and drain pan assembly, located downstream        of the blower with respect to the airflow, wherein the        refrigeration coil and drain pan assembly comprises:        -   a first drain pan having one or more drain connections,    -   a second drain pan having one or more drain connections, and    -   a refrigeration coil comprising a plurality of fins, the fins        oriented in a direction between the first drain pan and the        second drain pan, and    -   a refrigerant line, exiting the refrigeration coil and drain pan        assembly on a side;    -   wherein the first drain pan is located opposite the second drain        pan with respect to the refrigeration coil.

Aspect 12: The HVACR unit according to aspect 11, wherein therefrigeration coil and drain pan assembly is oriented such that one ofthe first drain pan and the second drain pan is located at the bottom ofthe refrigeration coil and drain pan assembly.

Aspect 13: The HVACR unit according to any of aspects 11-12, wherein therefrigeration coil has an open end and a converged end and the airflowenters the refrigeration coil at the open end and travels in a directiontowards the converged end.

Aspect 14: The HVACR unit according to aspect 13, The HVACR unit ofclaim 13, wherein the refrigeration coil and drain pan assembly isinstalled in one of:

-   -   a first position where airflow through the refrigeration coil        and drain pan assembly is from left to right from the        perspective of the side of the refrigeration coil and drain pan        assembly where the refrigerant line leaves the refrigeration        coil and drain pan assembly, or    -   a second position where airflow through the refrigeration coil        and drain pan assembly is from right to left from the        perspective of the side of the refrigeration coil and drain pan        assembly where the refrigerant line leaves the refrigeration        coil and drain pan assembly, and    -   wherein the refrigeration coil and drain pan assembly may be        switched from the first position to the second position.

Aspect 15: The HVACR unit according to any of aspects 11-14, wherein therefrigeration coil and drain pan assembly further comprises a removableaccess door disposed on a side of the refrigeration coil and drain panassembly where the refrigerant line exits the refrigeration coil anddrain pan assembly.

Aspect 16: The HVACR unit according to any of aspects 11-15, wherein atleast one of the first drain pan and the second drain pan comprises atleast two levels.

Aspect 17: The HVACR unit according to any of aspects 11-16, wherein therefrigerant line exits the refrigeration coil and drain pan assembly ata point equidistant from the first drain pan and the second drain pan.

Aspect 18: The HVACR unit according to any of aspects 11-17, wherein thefirst drain pan and the second drain pan are parallel to one another.

Aspect 19: The HVACR unit according to aspect 18, wherein the fins runin a direction perpendicular to the planes of both the first drain panand the second drain pan.

The examples disclosed in this application are to be considered in allrespects as illustrative and not limitative. The scope of the inventionis indicated by the appended claims rather than by the foregoingdescription; and all changes which come within the meaning and range ofequivalency of the claims are intended to be embraced therein.

1. A refrigeration coil and drain pan assembly, comprising: a firstdrain pan having one or more drain connections, a second drain panhaving one or more drain connections, and a refrigeration coilcomprising a plurality of fins; wherein the first drain pan and seconddrain pan are opposite one another with respect to the refrigerationcoil, and the fins of the refrigeration coil are oriented in a directionbetween the first drain pan and the second drain pan.
 2. Therefrigeration coil and drain pan assembly of claim 1, further comprisinga refrigerant line connected to the refrigeration coil
 3. Therefrigeration coil and drain pan assembly of claim 2, wherein therefrigerant line exits the refrigeration coil and drain pan assembly ata point equidistant from the first drain pan and the second drain pan.4. The refrigeration coil and drain pan assembly of claim 2, furthercomprising a removable access door disposed on a side of therefrigeration coil and drain pan assembly where the refrigerant lineexits the refrigeration coil and drain pan assembly.
 5. Therefrigeration coil and drain pan assembly of claim 1, wherein the firstdrain pan and the second drain pan are parallel to one another.
 6. Therefrigeration coil and drain pan assembly of claim 5, wherein the finsrun in a direction perpendicular to the planes of both the first drainpan and the second drain pan.
 7. The refrigeration coil and drain panassembly of claim 1, wherein at least one of the first drain pan and thesecond drain pan comprises at least two levels.
 8. The refrigerationcoil and drain pan assembly of claim 1, wherein the refrigeration coilis a dedicated horizontal refrigeration coil.
 9. The refrigeration coiland drain pan assembly of claim 1, wherein the refrigeration coil isconfigured for an airflow to enter the refrigeration coil from aspecific direction.
 10. The refrigeration coil and drain pan assembly ofclaim 1, wherein the refrigeration coil has an open end and a convergedend and an airflow enters the refrigeration coil at the open end andtravels in a direction towards the converged end.
 11. An HVACR unit,comprising: a blower driving an airflow, and a refrigeration coil anddrain pan assembly, located downstream of the blower with respect to theairflow, wherein the refrigeration coil and drain pan assemblycomprises: a first drain pan having one or more drain connections, asecond drain pan having one or more drain connections, and arefrigeration coil comprising a plurality of fins, the fins oriented ina direction between the first drain pan and the second drain pan, and arefrigerant line, exiting the refrigeration coil and drain pan assemblyon a side; wherein the first drain pan is located opposite the seconddrain pan with respect to the refrigeration coil.
 12. The HVACR unit ofclaim 11, wherein the refrigeration coil and drain pan assembly isoriented such that one of the first drain pan and the second drain panis located at the bottom of the refrigeration coil and drain panassembly.
 13. The HVACR unit of claim 11, wherein the refrigeration coilhas an open end and a converged end and the airflow enters therefrigeration coil at the open end and travels in a direction towardsthe converged end.
 14. The HVACR unit of claim 13, wherein therefrigeration coil and drain pan assembly is installed in one of: afirst position where airflow through the refrigeration coil and drainpan assembly is from left to right from the perspective of the side ofthe refrigeration coil and drain pan assembly where the refrigerant lineleaves the refrigeration coil and drain pan assembly, or a secondposition where airflow through the refrigeration coil and drain panassembly is from right to left from the perspective of the side of therefrigeration coil and drain pan assembly where the refrigerant lineleaves the refrigeration coil and drain pan assembly, and wherein therefrigeration coil and drain pan assembly may be switched from the firstposition to the second position.
 15. The HVACR unit of claim 11, whereinthe refrigeration coil and drain pan assembly further comprises aremovable access door disposed on a side of the refrigeration coil anddrain pan assembly where the refrigerant line exits the refrigerationcoil and drain pan assembly.
 16. The HVACR unit of claim 11, wherein atleast one of the first drain pan and the second drain pan comprises atleast two levels.
 17. The HVACR unit of claim 11, wherein therefrigerant line exits the refrigeration coil and drain pan assembly ata point equidistant from the first drain pan and the second drain pan.18. The HVACR unit of claim 11, wherein the first drain pan and thesecond drain pan are parallel to one another.
 19. The HVACR unit ofclaim 18, wherein the fins run in a direction perpendicular to theplanes of both the first drain pan and the second drain pan.